Slot coating under an electric field
US6214513A · kind A · utility
27Cited by
17References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1999 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Nov 24, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/05
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A coating process for the fabrication of organic photoreceptors employs an electrically conductive single slot die biased to allow an electric field between the die and the ground plane on the photoreceptor substrate. The homogenous coating dispersion is fed through the die at a predetermined gap and rate to control coating thickness at the same time that an electric field is applied. The formulation, rheology, particle mobility, coating speed, electric field and the like are controlled so that the photogenerator particles migrate to the substrate in the dwell time defined by the coating die region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.